Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 9, Problem 9.11QAP
Interpretation Introduction
Interpretation:
A grating monochromator has the wavelength of 500 nm with line width of 0.002 nm. For the first order grating, which is ruled at 2400 grooves/mm Minimum theoretical size of grating needs to be calculated.
Concept introduction:
Minimum theoretical size grating monochromator will be calculated by using the formula of resolving power, which is given as-
Here,
λ =wavelength
Δλ = wavelength difference
n = diffraction order
N = total number of slits
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What percent transmittance range and what absorbance range are considered to be the optimum working ranges for spectrochemical measurements?
Derive an expression relating absorbance to the concentrations of standard and unknown ( c subscript s and c subscript x) and the volumes of the standards and unknown ( V subscript s and V subscript x ) as well as the volume to which the solutions were diluted (V subscript t). Derive expressions for the slope and the intercept of the straight line obtained in (a) in terms of the variables listed above.
An aqueous solution of triphosphate derivative of molar mass 502 g per mol was prepared by dissolving 17.2 mg in enough water to make 500 cubic cm of solution and a sample was transferred to a cell of length 1 cm. The absorbance was measured as 1.011. Calculate the molar absorbance coefficient and the transmittance for a solution twice the concentration.
Chapter 9 Solutions
Principles of Instrumental Analysis
Ch. 9 - Prob. 9.1QAPCh. 9 - Prob. 9.2QAPCh. 9 - Why is an electrothermal atomizer more sensitive...Ch. 9 - Prob. 9.4QAPCh. 9 - Prob. 9.5QAPCh. 9 - Prob. 9.6QAPCh. 9 - Prob. 9.7QAPCh. 9 - Prob. 9.8QAPCh. 9 - Prob. 9.9QAPCh. 9 - Prob. 9.10QAP
Ch. 9 - Prob. 9.11QAPCh. 9 - Prob. 9.12QAPCh. 9 - Prob. 9.13QAPCh. 9 - Prob. 9.14QAPCh. 9 - Prob. 9.15QAPCh. 9 - Prob. 9.16QAPCh. 9 - Prob. 9.17QAPCh. 9 - In the concentration range of 1 to 100 g/mL P,...Ch. 9 - Prob. 9.19QAPCh. 9 - Prob. 9.20QAPCh. 9 - Prob. 9.21QAPCh. 9 - The chromium in an aqueous sample was determined...Ch. 9 - Prob. 9.23QAP
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